Complex Zeros Practice

Given one complex zero use the conjugate root theorem to find another.  Zero is 7-5i

• -7+5i

• 7-5i

• -7-5i

• 7+5i

Given one complex zero use the conjugate root theorem to find another.  Zero is: -12-8i

• 12+8i

• -12+8i

• 12-8i

• -12-8i

Write a polynomial function of least degree with the given zeros.

• A

• B

• C

• D

Write a polynomial function of least degree with the given zeros.

• A

• B

• C

• D

Use the Complex Conjugate Root Theorem to state another complex solution. Given that -7i is a root. 

• 7i

• -7i+1

• 1-7i

• 1+7i

Use the Complex Conjugate Root Theorem to state another complex solution. Given that -2-5i is a root. 

• -2-5i

• -2+5i

• 2+5i

• 5i

Find ALL the zeros of the function
f(x) = x ² +2x + 10

• -1 + 3i, -1-3i

• 1 + square root 19, 1- square root 19

• 2 + 6i , 2 - 6i

• -2+6i, -2-6i

How many complex zeros are there?

• 2

• 3

• 1

• 4

What are the zeros of the function f(x) = x² + 64?

• -8 and 8

• -8i and 8i

• (-√8) i and (√8) i

• -√8  and √8

If 2i is a zero, then

• 2i repeats twice

• -2i is a zero too

• 1-2i is a zero too

• 0+2i is a zero too